You are mad at the poker gawds. Being mad at any particular player is absurd, unless he physically assaults you.
You are mad at the odds
These are things equivalent to being mad at gravity when you want to fly.
Every hand you play is a calculated risk. Over the long term the odds will prevail, but 80% to prevail means that 20% won't prevail.
However, it does seem to be that you, and I, and we all, do tend to put more emphasis on those failures than is justly due.
Don't get mad, strive to get even.